Recirculation blower



FIG. 1 is a perspective view taken from the top, front and right side of a recirculation blower showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a cross-sectional view taken on line 4--4 of FIG. 3;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and

FIG. 7 is a rear elevational view thereof with the base omitted for convenience of illustration. 

The ornamental design of a recirculation blower, as shown and described. 